Cognomen Tangjong (Tangjong 
) , in the entire world, is a rare last name. The surname Tangjong is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare surname, and Thailand. Much less frequently, Tangjong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tangjong | India, Indonesia, Thailand |